/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraSystemSimulation.h
static void CopyToDataSets ( const [FNiagaraSystemCompiledData](API\Plugins\Niagara\FNiagaraSystemCompiledData) & CompiledData, const [FNiagaraSystemInstance](API\Plugins\Niagara\FNiagaraSystemInstance) & SystemInstance, [FNiagaraDataSet](API\Plugins\Niagara\FNiagaraDataSet) & SpawnDataSet, [FNiagaraDataSet](API\Plugins\Niagara\FNiagaraDataSet) & UpdateDataSet, int32 DataSetInstanceIndex )